摘要
本文通过对某城区10kV架空输电线路建立简化等值电路模型,对线路末端空载、线路三相不对称短路故障等几种可能产生工频过电压的运行方式进行仿真计算,结合长期运行数据,得出多种运行方式下输电线路的过电压特性,从而为线路检修,预防输电线路闪络接地事故,提供参考。
In this paper,a simplified equivalent circuit model of a 10kV overhead transmission lines is established.The electro-magnetic transient program(EMTP)is applied to the analysis of power frequency overvoltage in different operation modes.Combined with long-term operation data,over voltage characteristics of transmission line is obtained.The reference is provided to the investigation of the origin of transmission flashover.
作者
陈泽雄
Chen Zexiong(Guangzhou Power Supply Bureau Co.,Ltd.,Guangzhou Guangdong,510000)
出处
《电子测试》
2019年第21期71-74,共4页
Electronic Test
关键词
工频过电压
架空线
EMTP
overhead transmission
power frequency overvoltage
electro-magnetic transient program
